Robin Mueller
5907f8ee9d
This PR adds the packet stack for the CCSDS File Delivery Protocol. It also refactors the existing TMTC infastructure to allow sending of CFDP packets to the CCSDS handlers. This includes the whole PDU (Protocol Data Unit) stack: - File Data PDUs and all file directive PDUs - ACK PDU - NAK PDU - Metadata PDU - Finished PDU - Prompt PDU - Keep Alive PDU - EOF PDU The PR includes a full set of unittests for the packet stack with a coverage of 90+ %. The refactoring of the existing TMTC infastructure includes non-ideal solutions like diamond inheritance. Avoiding this solution would require refactoring the packet stack. This would be a good idea anyway because the existing stack is tightly coupled to the FSFW, making reuse more difficult if only the stack is planned to be used without the store functionalities etc. The PDU implementation provided here is only weakly coupled to the FSFW, only using components like returnvalues or the Serialization modules. There are dedicated serializers and deserializers, which also helps in creating small focused modules which are easy to test. Some of the modules here were provied by Matthias Tompert.
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
#ifndef FSFW_SRC_FSFW_CFDP_PDU_FILEDIRECTIVEDESERIALIZER_H_
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#define FSFW_SRC_FSFW_CFDP_PDU_FILEDIRECTIVEDESERIALIZER_H_
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#include "../definitions.h"
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#include "fsfw/cfdp/pdu/HeaderDeserializer.h"
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/**
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* @brief This class is used to deserialize a PDU file directive header from raw memory.
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* @details
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* Base class for other file directives.
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* This is a zero-copy implementation and #parseData needs to be called to ensure the data is
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* valid.
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*/
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class FileDirectiveDeserializer: public HeaderDeserializer {
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public:
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FileDirectiveDeserializer(const uint8_t* pduBuf, size_t maxSize);
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/**
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* This needs to be called before accessing the PDU fields to avoid segmentation faults.
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* @return
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*/
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virtual ReturnValue_t parseData();
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size_t getHeaderSize() const;
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cfdp::FileDirectives getFileDirective() const;
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void setEndianness(SerializeIF::Endianness endianness);
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SerializeIF::Endianness getEndianness() const;
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protected:
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bool checkFileDirective(uint8_t rawByte);
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private:
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void setFileDirective(cfdp::FileDirectives fileDirective);
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cfdp::FileDirectives fileDirective = cfdp::FileDirectives::INVALID_DIRECTIVE;
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SerializeIF::Endianness endianness = SerializeIF::Endianness::NETWORK;
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};
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#endif /* FSFW_SRC_FSFW_CFDP_PDU_FILEDIRECTIVEDESERIALIZER_H_ */
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